From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
linux-mm@kvack.org, akpm@linux-foundation.org,
nish.aravamudan@gmail.com
Subject: Re: [PATCH/RFC 0/8] Mapped File Policy Overview
Date: Fri, 25 May 2007 23:03:16 +0200 [thread overview]
Message-ID: <200705252303.16752.ak@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0705250823260.5850@schroedinger.engr.sgi.com>
On Friday 25 May 2007 17:25:15 Christoph Lameter wrote:
> On Fri, 25 May 2007, Lee Schermerhorn wrote:
>
> > It's easy to fix. The shared policy support is already there. We just
> > need to generalize it for regular files. In the process,
> > *page_cache_alloc() obeys "file policy", which will allow additional
> > features such as you mentioned: global page cache policy as the default
> > "file policy".
>
> A page cache policy would not need to be file based. It would be enough
> to have a global one or one per cpuset. And it would not suffer from the
> vanishing act of the inodes.
I agree. A general page cache policy is probably a good idea and having
it in a cpuset is reasonable too. I've been also toying with the idea to
change the global default to interleaved for unmapped files.
But in this case it's actually not needed to add something to the
address space. It can be all process policy based.
-Andi
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next prev parent reply other threads:[~2007-05-25 21:03 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-24 17:28 Lee Schermerhorn
2007-05-24 17:28 ` [PATCH/RFC 1/8] Mapped File Policy: move shared policy to inode/mapping Lee Schermerhorn
2007-05-24 17:28 ` [PATCH/RFC 2/8] Mapped File Policy: allocate shared policies as needed Lee Schermerhorn
2007-05-24 17:28 ` [PATCH/RFC 3/8] Mapped File Policy: let vma policy ops handle sub-vma policies Lee Schermerhorn
2007-05-24 17:28 ` [PATCH/RFC 4/8] Mapped File Policy: add generic file set/get policy vm ops Lee Schermerhorn
2007-05-24 17:28 ` [PATCH/RFC 5/8] Mapped File Policy: Factor alloc_page_pol routine Lee Schermerhorn
2007-05-24 17:29 ` [PATCH/RFC 6/8] Mapped File Policy: use file policy for page cache allocations Lee Schermerhorn
2007-05-24 17:29 ` [PATCH/RFC 7/8] Mapped File Policy: fix migration of private mappings Lee Schermerhorn
2007-05-24 17:29 ` [PATCH/RFC 8/8] Mapped File Policy: fix show_numa_maps() Lee Schermerhorn
2007-05-24 19:24 ` [PATCH/RFC 0/8] Mapped File Policy Overview Christoph Lameter
2007-05-24 20:46 ` Lee Schermerhorn
2007-05-24 20:41 ` Andi Kleen
2007-05-24 21:05 ` Lee Schermerhorn
2007-05-24 21:17 ` Christoph Lameter
2007-05-25 14:55 ` Lee Schermerhorn
2007-05-25 15:25 ` Christoph Lameter
2007-05-25 16:06 ` Lee Schermerhorn
2007-05-25 16:24 ` Christoph Lameter
2007-05-25 17:37 ` Lee Schermerhorn
2007-05-25 19:10 ` Christoph Lameter
2007-05-25 21:12 ` Lee Schermerhorn
2007-05-25 21:43 ` Christoph Lameter
2007-05-25 21:01 ` Andi Kleen
2007-05-25 21:41 ` Lee Schermerhorn
2007-05-25 21:46 ` Christoph Lameter
2007-05-29 13:57 ` Lee Schermerhorn
2007-05-25 21:03 ` Andi Kleen [this message]
2007-05-25 21:14 ` Lee Schermerhorn
2007-05-25 22:44 ` Andi Kleen
2007-05-29 14:17 ` Lee Schermerhorn
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